PREDIKSI DAN TINGKAT BAHAYA EROSI SUB - SUB DAS SIKABUGADANG KECAMATAN KURANJI KOTA PADANG

Research on "Prediction of erosion potential at sub - sub- watershed Sikabugadang District of Padang Kuranji" was conducted from June to October 2013 with the aim to predict soil erosion and to map erosion potential, as well as to determine the rate of erosion that can be tolerated in various land units. The experiment was conducted with a survey method. Results showed that there are mild levels of erosion such as, at paddy field (III Sw C), secondary forest (I Hs D), primary forest (I Hp E) and (I Hp D) with an area of 781.5 hectares or 54.1 % of the total area. The area that experienced moderate erosion hazard is at settlement (II Pm A) and secondary forest (I Hs E) with a total area of 121 ha / 8.3 % of the total area. Land units considered as very severe erosion hazard rate found at dry land of haplohumults (I Plk C), dry land of haplodults (II Plk C), mixed farm with moderately steep slope (II Kc C), mixed farm of steep slope (I Kc D) with a total area of 544.5 hectares / 37.6 % of the total overall. Major erosion occurred in the mixed garden land units of dry land (I Plk C) and erosion occurred 1788.50 tons / ha / yr. Lowest erosion occurs in primary forest land units with a rather steep slope primary forest (I Hp D) with a rate of 3.79 ton / ha / yr. Alternative land use recommendation is by making medium density mixed farms with homogeneous plants, construct terraces to reduce the length of slopes and retain water, as such to reduce the amount of surface runoff, and to suppress erosio